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July 27, 2011 AEI Project No. 299162 Page 2 of 5 Prior to the construction of the current building, the subject property was a portion of the Spreckels Sugar Company facility, which occupied the subject property and surrounding area from 1917 until 1995. The subject property is located in the east central portion of the former Spreckels Sugar site. The majority of the subject property was formerly occupied by wastewater ponds. A disposal area, known as Site B, which contained miscellaneous concrete rubble and a small amount of lime waste was also located in the south-central portion of the subject property. Circa 1998, the ponds located on the subject property, which formerly contained wastewater, collected accumulated rainwater. The subject property and surrounding area were identified in the regulatory database as part of the former Spreckels Sugar Company. This site was listed on the Spills, Leaks, Investigations and Cleanup (SLIC), Comprehensive Environmental Response, Compensation, and Liability Information System No Further Remedial Action Planned (CERCLIS-NFRAP), California Department of Toxic Substances Control's ENVIROSTOR, Resource Conservation and Recovery Act Small Quantity Generator (RCRA SQG), Facility Index System/Facility Registry System (FINDS), Waste Management Unit Database System (WMUDS/SWAT), Hazardous Waste & Substances Sites List (HIST CORTESE), Emissions Inventory Data (EMI), Underground Storage Tank (UST), Federal Insecticide, Fungicide, & Rodenticide Act (FTTS)/Toxic Substances Control Act (TSCA) Tracking System (FITS), and Historical FTTS (HIST FITS) databases. One large drain was observed within the subject property forklift washing area, located within the subject property warehouse. The drain reportedly leads to a round plastic aboveground storage tank (AST) totaling approximately 5,000-gallons, which is situated on concrete within a locked room directly beyond the fagade of the building. The contents of the AST are reportedly pumped out and transported off-site by a materials hauler. The washing area was significantly stained with rust-like staining, likely related to the forklift washing practices formerly employed at the subject property._Due to the unknown integrity of the drain lines, the floor drains have the potential to act as conduits to the subsurface of the subject property for any materials that are discharged to the drain lines. Furthermore, there is a potential for overfilling of the AST. Based on the quantity of staining observed in combination with the presence of the floor drain and the unknown types and quantities of hazardous materials and/or petroleum products used and stored onsite, AEI was unable to rule out the potential that a release to the subsurface of the subject property may have occurred via the drain or tank overfill, representing evidence of a REC. ,Oeol pe II Geology and Hydrogeology According to information obtained from the United States Geological Survey (USGS) San Francisco Bay Quadrangle Geologic Map, the area surrounding the subject property is underlain by Late and Middle Pleistocene era outwash sand and gravel which are commonly characterized by light brown to reddish-brown gravel, silt and sand.